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Back Door Entry Lock and Unlock Functions do not Operate: Procedure

  1. CHECK POWER DOOR LOCK OPERATION 
    1. When the door control switch of the master switch assembly is operated, check that the locked doors unlock.

      OK

      Door locks operate normally.

    NG → See step   7 

    OK: Go to next step 

  2. READ VALUE USING TECHSTREAM (BACK DOOR LOCK SWITCH, BACK DOOR OPEN HANDLE SWITCH) 
    1. Using the Techstream, read the Data List.
      MAIN BODY

      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Back Door Open Handle SW Back door opener switch / ON or OFF ON: Back door opener switch is pushed
      OFF: Back door opener switch is not pushed      		 -
      SMART KEY

      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Tr/B-Door Lock SW Back door lock switch / ON or OFF ON: Back door lock switch is pushed
      OFF: Back door lock switch is not pushed      		 -

      OK

      "ON" (switch is pushed) or "OFF" (switch is not pushed) appears on the screen.

    NG → See step   6 

    OK: Go to next step 

  3. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU [SMART KEY ECU ASSEMBLY] - OUTSIDE ELECTRICAL KEY OSCILLATOR) 
    1. Disconnect the E29 ECU connector.
      Fig 1: Identifying Certification ECU And Outside Electrical Key Oscillator Connector Terminals
      GTY144104Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the K23 antenna connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      E29-31 (CLG8) - K23-1 (CLG5) Always Below 1 Ω
      E29-32 (CG8B) - K23-2 (CLGB) Always Below 1 Ω
      E29-31 (CLG8) - Body ground Always 10 kΩ or higher
      E29-32 (CG8B) - Body ground Always 10 kΩ or higher

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  4. REPLACE BACK DOOR ELECTRICAL KEY ANTENNA (for Outer) 
    1. Replace the back door electrical key antenna, refer to REMOVAL .

    NEXT: Go to next step 

  5. CHECK BACK DOOR ELECTRICAL KEY ANTENNA [for Outer] (OPERATION) 
    1. Check that the entry functions operate normally.

      OK

      Entry functions operate normally.

    NG → REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) 

    OK → END (BACK DOOR ELECTRICAL KEY ANTENNA IS DEFECTIVE) 

  6. CHECK HARNESS AND CONNECTOR (BACK DOOR OPENER SWITCH - BODY GROUND) 
    1. Disconnect the S7 switch connector.
      Fig 2: Identifying Back Door Opener Switch Connector Terminals
      GTY117099Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      S7-2 (L) - Body ground Always Below 1 Ω

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK → See step   8 

  7. GO TO POWER DOOR LOCK CONTROL SYSTEM. Refer to  OPERATION CHECK 
  8. REPLACE BACK DOOR OPENER SWITCH. Refer to  REMOVAL 
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